Honestly you could put up to 15 in there but cycle the tank first and make sure you have the right filtration for it. I would go with 10 or less if you plan on getting any females as you will soon end up with more guppies than you would ever know what to do with.

I have a 10 gal Guppy tank set up and cycled now for over 5 mths and have over 24 guppies in it and do weekly water changes and test water every other day and every thing is in check and in balance . Just keep an eye on your water quality and do water changes of 25 to 30 % a week and you should be fine with 15 to 20 Guppy

I have a 10 gal Guppy tank set up and cycled now for over 5 mths and have over 24 guppies in it and do weekly water changes and test water every other day and every thing is in check and in balance . Just keep an eye on your water quality and do water changes of 25 to 30 % a week and you should be fine with 15 to 20 Guppy

are they adult guppies? its not always about water quality at work we could have probably 30 in our 10 gallons because they are so well established but we dont keep more than 10-15 for the sake of the fish. they need adequate swimming room and to be able to get away if needed and have their own space.

No there mixed , ranging from week old fry to 2 year old( mostly 6mth to 8 mth old ) . I also have larger then called for filtration ( 15 -20 gal HOB filter) And I have alot of fake plants and a plastic rock/tree stump/ cave they love to play in and around . That has so far worked out well for me , but also I wont add more because I know I'm pushing the limits of my bio-load and tank size . I have pics of the tank on my profile if you would like to see it .
I have seen in the past ppl having more then 100 Guppies in a 10 gal tank and having good luck with the fishes health and over well being , but I would in no way try or advise trying more then 15 to 20 in a 10 gal tank .
The reason I have more is I am expecting death of a few if not half of the adults ( feeders) and as everyone knows the mortality rate of fish labeled "feeders" are some what high . So I got a few more then I want/need to insure I would have a good stock make it through .

No there mixed , ranging from week old fry to 2 year old( mostly 6mth to 8 mth old ) . I also have larger then called for filtration ( 15 -20 gal HOB filter) And I have alot of fake plants and a plastic rock/tree stump/ cave they love to play in and around . That has so far worked out well for me , but also I wont add more because I know I'm pushing the limits of my bio-load and tank size . I have pics of the tank on my profile if you would like to see it .
I have seen in the past ppl having more then 100 Guppies in a 10 gal tank and having good luck with the fishes health and over well being , but I would in no way try or advise trying more then 15 to 20 in a 10 gal tank .
The reason I have more is I am expecting death of a few if not half of the adults ( feeders) and as everyone knows the mortality rate of fish labeled "feeders" are some what high . So I got a few more then I want/need to insure I would have a good stock make it through .

oh well week old fry dont ocupy hardly any bioload i was thinking you ment all full grown adults. i have personally had over 100 fry in a ten gallon but they were all tiny and were moved out as soon as they got to about 1/4-1/2 inch.